Abstract
Y2O3:Eu3+ phosphors were prepared by NH4HCO3 based precipitation method and C2H 5NO2-nitrate solution combustion synthesis method respectively. The phosphors were systematically investigated by field emission scanning electron microscope (SEM), X-ray diffractometer (XRD), scanning electron microscope (XPS) and fluorescence spectrometer. Luminescent properties of Y2O3:Eu3+ phosphors synthesised by two different methods were also compared. The results show that Y2O 3:Eu3+ phosphor prepared by precipitation technique is spherical with nanometre particle size from 55 to 60 nm, whereas the one synthesised by combustion technique exhibits extensive sheet porosity structure. X-ray diffraction spectra indicate that both of the samples have pure cubic phases and the crystallinity of phosphor synthesised by combustion technique is improved. The main emission peaks of Y2O3:Eu3+ phosphors at 613 nm are due to the 5D0-7F 2 transition of Eu3+ ions, and phosphor obtained by precipitation method shows higher emission intensity. The results reveal that Y2O3:Eu3+ phosphor with spherical particle shape can exhibit good luminescent properties and morphology of Y 2O3:Eu3+ phosphor is a more crucial factor than crystal structure to the enhanced luminescence. S. Maney & Son Ltd.
Original language | English |
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Pages (from-to) | 198-203 |
Number of pages | 6 |
Journal | Materials Technology |
Volume | 29 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Keywords
- Combustion
- Luminescent properties
- Precipitation
ASJC Scopus subject areas
- Mechanics of Materials
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering